Dashboard: IndicatorT

       Name: IndicatorT                                              [Show more]
       Type: Subroutine
   Category: Dashboard
    Summary: Update the Theme indicator ("T")
    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * MainLoop (Part 8 of 15) calls IndicatorT
             * ResetVariables calls IndicatorT


.IndicatorT

 LDA #%01110111         \ Set A to a four-pixel block with pixels 0, 1 and 2 in
                        \ white, to act as the centre of the Theme indicator
                        \ when turned on

 LDX themeStatus        \ If themeStatus is positive then the Theme is enabled,
 BPL indt1              \ so jump to indt1

 LDA #%01010101         \ Set A to a four-pixel block with pixels 0 and 2 in
                        \ white, to act as the centre of the Theme indicator
                        \ when turned off

.indt1

 LDX #2                 \ Set X = 2 to use as a pixel row counter for the three
                        \ pixel rows in the Theme indicator

.indt2

 STA row30_char0_2,X    \ Update pixel row X of the Theme indicator to the pixel
                        \ pattern in A

 DEX                    \ Decrement the byte counter to the pixel row above

 BPL indt2              \ Loop back to update the next row of the indicator

 RTS                    \ Return from the subroutine